BD9E101FJ-LBGH2 ROHM

Datasheet 7.0V to 36V Input, 1.0 A Integrated MOSFET Single Synchronous Buck DC/DC Converter BD9E101FJ-LB General Description Key Specifications This is the product guarantees long time support in Input Voltage Range: 7.0V to 36V Industrial market. Output Voltage Range: 1.0V to VIN0.7V Output Current: 1.0A (Max) BD9E101FJ-LB is a synchronous buck switching regulator Switching Frequency: 570kHz (Typ) with built-in power MOSFETs. It is capable of an output High-Side MOSFET ON-Resistance: 300m (Typ) current of up to 1.0A. It is a current mode control DC/DC Low-Side MOSFET ON-Resistance: 300m (Typ) converter and features high-speed transient response. Standby Current: 0A (Typ) Phase compensation can also be set easily. Package W (Typ) x D (Typ) x H (Max) Features SOP-J8 4.90mm x 6.00mm x 1.65mm Long Time Support Product for Industrial Applications. Synchronous single DC/DC converter. Over-Current Protection. Short Circuit Protection. Thermal Shutdown Protection. Undervoltage Lockout Protection. Soft Start. SOP-J8 package. Applications Industrial Equipment. Power supply for FAs industrial device using 24V bass. Consumer applications such as home appliance. Distribution type power supply system for 12V, and SOP-J8 24V. Typical Application Circuit VIN 2 VIN BOOT 1 24V BD9E101FJ-LB 10F 0.1F VOUT SW 8 10H Enable 3 EN 22F2 COMP AGND PGND FB 6 4 7 5 12k 30k 3k 4700pF Figure 1. Application circuit Product structureSilicon monolithic integrated circuit. This product has no designed protection against radioactive rays. www .rohm.com TSZ02201-0J3J0AJ00390-1-2 2013 ROHM Co., Ltd. All rights reserved. 1/30 14.May.2014 Rev.003 TSZ2211114 001 BD9E101FJ-LB Pin Configuration (TOP VIEW) 1 8 SW BOOT VIN PGND 2 7 3 6 COMP EN AGND 4 5 FB Figure 2. Pin assignment Pin Description(s) Pin No Pin Name Description Connect a bootstrap capacitor of 0.1F between this terminal and SW terminal. 1 BOOT The voltage of this capacitor is the gate drive voltage of the high-side MOSFET. Power supply terminal for the switching regulator and control circuit. 2 VIN Connecting a 10F ceramic capacitor is recommended. Turning this terminal signal low-level (0.8V or lower) forces the device to enter the shut 3 EN down mode. Turning this terminal signal high-level (2.5V or higher) enables the device. This terminal must be terminated. 4 AGND Ground terminal for the control circuit. Inverting input node for the gm error amplifier. 5 FB See page 22 on how to calculate the resistance of the output voltage setting. Input terminal for the gm error amplifier output and the output switch current comparator. Connect a frequency phase compensation component to this terminal. 6 COMP See page 23 on how to calculate the resistance and capacitance for phase compensation. 7 PGND Ground terminal for the output stage of the switching regulator. Switch node. This terminal is connected to the source of the high-side MOSFET and drain of the low-side MOSFET. Connect a bootstrap capacitor of 0.1F between this 8 SW terminal and BOOT terminal. In addition, connect an inductor considering the direct current superimposition characteristic. www.rohm.co TSZ02201-0J3J0AJ00390-1-2 2013 ROHM Co., Ltd. All rights reserved. 2/30 14.May.2014 Rev.003 TSZ22111 15 001